Siemens SIMATIC NET CP, SINEMA and SCALANCE

Risk Summary

Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service (DoS) condition in the affected devices by exploiting integer overflow bugs.

CVEs (2)

Remediations

• Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:
• RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2), SCALANCE M804PB (6GK5804-0AP00-2AA2), SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2), SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2), SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2), SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2), SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2), SCALANCE M874-2 (6GK5874-2AA00-2AA2), SCALANCE M874-3 (6GK5874-3AA00-2AA2), SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1), SCALANCE S615 (6GK5615-0AA00-2AA2): Update to V7.1 or later version
• As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and following recommendations in the product manuals.
• Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage
• For more information see the associated Siemens security advisory SSA-539476 in HTML and CSAF.
• (CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Only deploy certificates via TIA portal that got created with TIA portal
• (CVE-2021-41991) SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0): Update to V2.2.28 or later version
• (CVE-2021-41991) SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0), SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0): Update to V3.3.46 or later version
• (CVE-2021-41991) SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0): Update to V1.1 or later version
• (CVE-2021-41991) SINEMA Remote Connect Server: Update to V3.1 or later version
• (CVE-2021-41991) SCALANCE SC622-2C (6GK5622-2GS00-2AC2), SCALANCE SC632-2C (6GK5632-2GS00-2AC2), SCALANCE SC636-2C (6GK5636-2GS00-2AC2), SCALANCE SC642-2C (6GK5642-2GS00-2AC2), SCALANCE SC646-2C (6GK5646-2GS00-2AC2): Update to V2.3 or later version
• (CVE-2021-41991) SIMATIC CP 1543-1 (6GK7543-1AX00-0XE0), SIPLUS NET CP 1543-1 (6AG1543-1AX00-2XE0): Update to V3.0.22 or later version

Affected Vendors

Affected Products (41)

Affected Sectors

Critical Manufacturing